First Aid Kit- bandages ( heel bandages are great for walking), witch hazel, Neosporin, Pepto ( or some type of tummy meds for all that new food you may try), Motion Sickness Meds,etc.

Credit Cards, ID, Passport, Cash ( small bills are great for cash purchases and tolls), Emergency Contact Info, etc. **TIP: I split up my cash/credit cards/etc over a few bags. I have lost a credit card on a trip before and was so glad I had a backup!**